JP2007099324A - Deep drawing formed vessel and packaging body using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deep drawing formed vessel that is preferentially used in particular for transporting/storing a content such as medicine, for example, of which constituents are important, and also to provide and a wrapper using the same. <P>SOLUTION: A deep drawing formed vessel 10 of this invention is constructed in such a way that a deep drawing packaging material formed by stacking up a resin film 6 having at least a molding characteristic and a resin layer 2 having both a barrier characteristic and a heat sealing characteristic in sequence from outside through an adhering layer 4 is molded under application of vacuum and air pressure. This deep drawing formed vessel is characterized in that the resin layer 2 having the aforesaid barrier characteristic and heat sealing characteristic is made of ethylene-vinyl alcohol copolymer, or polyacrylonitrile. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a deep-drawn molded container and a package using the same, and more specifically, it is filled and packaged with food, cosmetics, bags or containers containing medicine, medical instruments, electronic components, electronic component members, and the like. And a package using the same.

Deep-drawn molded containers suitable for filling and packaging ham, sausages, sliced products thereof, dairy processed products such as cheese, semi-fresh confectionery, cakes, salads, vegetables and other agricultural products, marine products, etc. are widely used Has reached.
A deep-drawn molded container suitable for filling and packaging conventional foods and the like is a resin film having moldability in order from the outside, a resin film having moldability and printability, a resin film having moldability and barrier properties. A deep-drawn container formed by vacuum / pressure forming a deep-drawing packaging material in which resin films having moldability and heat sealability are sequentially laminated is disclosed (for example, see Patent Document 1).
And in conventional deep drawing packaging materials and lid materials, the resin forming the inner layer is a low-density polyethylene, polypropylene, which is a resin film having heat-sealability that can be melted by heat and heat-sealed to each other, Polyvinyl acetate resin and the like are usually used.
Furthermore, when the lid material is hermetically sealed to the flange portion of the conventional deep-drawn molded container, a method of hermetically sealing so as to have an easy peel property (easy openability) is used.
In order to provide barrier properties in conventional deep drawing packaging materials and lid materials, an ethylene / vinyl alcohol copolymer is used for the intermediate layer of the deep drawing packaging material, or aluminum is used for the intermediate layer of the lid material. It is known to use a film provided with a vapor deposition layer such as an ethylene / vinyl alcohol copolymer resin layer.
JP-A-9-123268

However, with the diversification of products, the applications of deep-drawn containers are diversified, and the required performance cannot always be satisfied with conventional deep-drawn containers.
Specifically, for example, contents such as pharmaceuticals in which the components of the contents are particularly important are stored in a conventional deep-drawing container in which the innermost layer of the deep-drawing packaging material and the lid is made of low-density polyethylene or the like. When hermetically wrapping with a lid material, there is a problem that the deep drawing packaging material, the adhesive component derived from the lid material, the printing ink component, and the like may be transferred to the contents to impair sanitary safety and storage stability.

  For this reason, an object of the present invention is to provide a deep-drawn container that can be used particularly suitably for the transportation and storage of contents in which components are important, such as pharmaceuticals, and a package using the same. It is in.

  Therefore, in order to solve the above problems, in the deep-drawn molded container of the present invention, from the outside, at least a resin film having moldability and a resin layer having barrier properties and heat sealability are sequentially formed via an adhesive layer. A deep-drawn container formed by vacuum / pressure forming a deep-drawing packaging material laminated on the resin layer, wherein the resin layer having the barrier property and heat sealability is an ethylene / vinyl alcohol copolymer, A deep-drawn container made of acrylonitrile.

  Further, the package of the present invention is characterized in that the contents are further filled and packaged in the deep drawing container, and a lid is hermetically sealed to the flange portion of the opening of the deep drawing container. It is a packaging body.

  Further, the packaging body of the present invention is the packaging body according to the above-mentioned packaging body, in which the lid material is sequentially formed from the outside with at least a base film and a resin layer having a barrier property and a heat sealing property through an adhesive layer. It is the package body characterized by being a laminated body laminated | stacked on.

  Further, the packaging body of the present invention is configured such that the above contents are stored in the container together with the oxygen scavenger packaging body in which the oxygen scavenger is packaged at least partially by a packaging material made of a breathable sheet. It is the characteristic packaging body.

  The package of the present invention is a package characterized in that the contents stored in the container are a medical instrument, a bag or container containing a medicine, an electronic component, or an electronic component member.

Since the deep-drawn container of the present invention has a structure in which the innermost layer in contact with the contents is formed of an ethylene / vinyl alcohol copolymer or polyacrylonitrile, according to the present invention, the adhesive derived from the deep-drawing packaging material Ingredients, printing ink components, etc. have heat sealability necessary for sealing lid materials and thermoformability such as vacuum / compression molding, etc. Oxygen barrier properties, water vapor barrier properties, etc.
It is excellent in storage stability and hygiene safety, and has an effect that it can be used particularly suitably for the distribution and storage of contents in which the components of the contents are important, such as pharmaceuticals.
In addition, the lid material formed by hermetically sealing the flange portion of the opening of the deep-drawn container of the present invention is also configured so that the innermost layer in contact with the contents is formed of an ethylene / vinyl alcohol copolymer or polyacrylonitrile. With this, the lid-derived adhesive component, printing ink component, etc. do not migrate to the contents, making it easy to open, oxygen barrier, water vapor barrier, storage stability, content adsorption prevention, and hygiene safety Excellent.
Further, by forming a deep-drawn container and a lid using a laminated film having a polyamide film layer as an outer layer or an intermediate layer, the deep-drawn container and the lid have flexibility, pinhole resistance, etc. Improved characteristics.

Hereinafter, the structure of the above-described deep drawing packaging material, deep drawing molded container, and packaging body according to the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the deep drawing packaging material according to the present invention. FIG. 2 is a sectional view showing the layer structure, FIG. 2 is a sectional view showing the layer structure of another embodiment of the deep drawing packaging material according to the present invention, and FIG. 3 is shown in FIG. 1 or FIG. FIG. 4 is a cross-sectional view showing a configuration of a deep drawing molded container 10 manufactured using a deep drawing packaging material, and FIG. 4 shows a package 100 in which the contents are filled and packaged using the deep drawing molded container shown in FIG. It is sectional drawing which shows this structure.
As shown in FIG. 1, the deep-drawing packaging material 1 according to the present invention comprises a resin film 2 having moldability and a resin layer 6 having barrier properties and heat-seal properties sequentially through an adhesive layer 4. It consists of a laminated structure.
As shown in FIG. 2, another deep drawing packaging material 1 according to the present invention includes a resin film 2 having moldability, a pinhole-resistant layer 3, and a resin layer 6 having barrier properties and heat sealability. Are sequentially stacked via the adhesive layer 4.
Next, as shown in FIG. 3, the deep-drawn container 10 according to the present invention uses the deep-drawing packaging material 1 shown in FIG. 1 or 2, and softens the deep-drawing packaging material 1 by heating. After that, thermoforming such as vacuum / air pressure molding is performed so that the resin layer 6 having the barrier property and the heat sealing property becomes the inner surface of the container 10, and then the outer periphery deep drawing packaging material 1 is cut. The flange portion 8 is formed.
Next, as shown in FIG. 4, the package 100 according to the present invention uses the deep-drawn container 10 produced as described above, and fills the deep-drawn container 10 with the contents 9, and then A cover material comprising a laminate formed by sequentially laminating a base film 12 having a function as a cover material and a resin layer 14 having a barrier property and a heat seal property on the surface of the flange portion 8 of the deep-drawn molded container 10. 20 and the resin layer 14 having the barrier property and heat sealability are opposed to each other, and then the deep-drawn container 10 and the lid member 20 are heat-sealed at the flange portion 8 portion. The seal portion 16 can be formed by hermetically sealing, and the outer periphery can be trimmed.
The package 100 may be stored together with the oxygen scavenger 18 and sealed with the lid member 20 for the purpose of improving oxygen gas barrier properties.
The example illustrated above is an example showing the configuration of the deep-drawing packaging material, the deep-drawing molded container, the package and the like according to the present invention, and the present invention is not limited thereby.

The above-described present invention will be described in more detail below.
Regarding the above-mentioned present invention, the materials constituting the deep drawing packaging material, the lid material, the deep drawing molded container and the like according to the present invention will be described. First, as the resin film 2 having moldability, vacuum / pressure forming, etc. Can be used, for example, polystyrene resins, polycarbonate resins, polyolefin resins such as polyethylene and polypropylene, polyvinyl chloride resins, acrylic or methacrylic resins, acrylonitrile resins, etc. Resins or films such as resins, acrylonitrile-butadiene-styrene copolymers, acrylonitrile-styrene copolymers, polyester resins, polyamide resins, polyacetal resins, and the like can be used.
The film is an unstretched film, and the thickness thereof is about 10 μm to 1000 μm, preferably about 20 μm to 800 μm.

Next, in the present invention, when a desired printed pattern such as letters, figures, symbols, and patterns is further applied, as a resin or film having moldability and printability, tensile strength, burst strength, tear strength, impact strength, wear A resin film or sheet that is excellent in various strengths such as strength, toughness, rigidity, etc. and can serve as a base material layer of a container can be used. For example, a polyester resin, a polyamide resin, a polycarbonate resin, Polypropylene resins, polyacetal resins, modified resins of these resins, and other resins or films can be used.
The film is an unstretched film, and the thickness is preferably about 20 μm to 300 μm, more preferably about 20 μm to 150 μm.
In the present invention, a desired printing pattern can be formed on the surface of the resin film by a normal printing method such as gravure printing, offset printing, silk screen printing, or the like.

Next, in the present invention, the resin layer 6 having barrier properties, moldability, and heat sealability has a barrier property against oxygen gas, water vapor, printing ink components, residual solvent of the adhesive, etc. It is possible to use a resin layer that has a heat forming property such as vacuum / pressure forming, and can be melted by heat and heat-bonded to each other. Resin and ethylene / vinyl alcohol copolymer resin can be used.
The ethylene / vinyl alcohol copolymer resin preferably has an ethylene content of 44 mol% to 52 mol% in terms of barrier properties, moldability, and heat sealability.
That is, when the ethylene content is less than 44 mol%, the heat sealability is inferior, which is not preferable. When the ethylene content exceeds 52 mol%, the barrier property is deteriorated, which is not preferable.
The thickness is preferably about 5 μm to 300 μm, and preferably about 20 μm to 150 μm.

Next, in the above-mentioned present invention, the intermediate layer having moldability and barrier property is a resin having thermoformability such as vacuum / pressure forming as described above, and further having a barrier property against oxygen gas, water vapor and the like. Or a film such as a polyvinylidene chloride resin, a polyvinyl alcohol resin, a saponified ethylene-vinyl acetate co-resin, a polyacrylonitrile resin, or the like is used. Can do.
The ethylene / vinyl alcohol copolymer resin preferably has an ethylene content of 27 mol% to 50 mol% in terms of barrier properties and moldability.
That is, when the ethylene content is less than 27 mol%, it is not preferable because the interlayer adhesion is poor, and when the ethylene content exceeds 50 mol%, the barrier properties are deteriorated.
The thickness is preferably about 5 μm to 50 μm, and more preferably about 5 μm to 30 μm.

Next, in the present invention described above, a method for producing a deep drawing packaging material using the above-described materials and combining them together will be described. As such a method, lamination as a normal packaging material is performed. It can be performed by a lamination method for producing a body, for example, a wet lamination method, a dry lamination method, a solventless dry lamination method, an extrusion lamination method, a T-die coextrusion lamination method, a coextrusion lamination method, and other methods.
In the present invention, for example, known anchor coating agents such as isocyanate (polyurethane), polyethyleneimine, polybutadiene, and organic titanium can be used.
Furthermore, in the present invention, polyurethane, polyester, epoxy, polyamito, poly (meth) acrylic, polyvinyl acetate, cellulose, polyacetal, and other laminating adhesives can be used. .
In the present invention, if necessary, pretreatment such as corona treatment and ozone treatment can be optionally performed.

Next, in the present invention, a thermoforming method for vacuum / pressure forming of the deep drawing packaging material 1 manufactured as described above will be explained. As the thermoforming method, for example, the deep drawing produced above is used. Examples thereof include a thermoforming method in which a packaging material is softened by heating and pressed against a forming die by pressurization.
Specifically, the above-mentioned deep drawing packaging material is softened by heating, and then the packaging material is applied to a mold by vacuum forming or pressure forming, and at that time, a resin having moldability, heat sealability, and barrier properties. A deep-drawn container according to the present invention can be manufactured by forming the film or sheet so as to be the inner surface of the container and having a flange portion for hermetically sealing the lid.
In the present invention, the package according to the present invention can also be manufactured by molding with a continuous molding machine for both vacuum and pressure, and then filling the contents, sealing the lid material, trimming, and the like.

  Next, in the present invention, a description will be given of a method of manufacturing the package 100 using the deep-drawn molded container manufactured as described above. As such a method, in the deep-drawn molded container manufactured as described above, , For example, filled with filling contents such as food, cosmetics, medicine-filled bags or containers, medical instruments, electronic parts, members for electronic parts, etc., and then a lid on the flange part at the opening of the molded container, The surfaces having heat sealability are overlapped and hermetically sealed so as to face each other, and then, if necessary, the periphery of the outer periphery of the hermetically sealed package is trimmed to produce the package according to the present invention. Can do.

In the above, as the lid material, for example, a laminate formed by sequentially laminating at least a base film 12 having strength, rigidity, etc., and a resin layer 14 having a barrier property and a heat seal property via an adhesive layer. The body can be used.
As the base film 12 constituting the lid member, the above-described resin film having moldability and printability can be used similarly. For example, polyester resin, polyamide resin, polycarbonate resin, polypropylene Base resins, polyacetal resins, modified resins of these resins, and films of other resins can be used.
The film may be an unstretched film or a stretched film, and the thickness is preferably about 9 μm to 300 μm, more preferably about 12 μm to 100 μm.

In addition, as the base film having the barrier property constituting the lid member, the resin film having the moldability and the barrier property described above can be used in the same manner. A film of a resin such as polyvinylidene chloride resin, polyvinyl alcohol resin, saponified ethylene-vinyl acetate copolymer, or polyacrylonitrile resin can be used.
The thickness is preferably about 5 μm to 50 μm, and more preferably about 5 μm to 30 μm.
In the present invention, the barrier layer constituting the lid member includes, for example, an aluminum foil, a resin film having an aluminum vapor deposition film, and a vapor deposition film of an inorganic oxide such as silicon oxide or aluminum oxide. A resin film or the like can be used.
In the above, as the aluminum foil, one having a thickness of about 6 μm to 30 μm, and as the vapor deposition film of an inorganic oxide such as aluminum, silicon oxide, or aluminum oxide, one having a thickness of about 100 to 3000 mm can be used.
As a method for forming the deposited film, the film may be formed by any method such as physical vapor deposition or chemical vapor deposition.
Examples of the resin film that supports the vapor-deposited film include, for example, polyester films, polyamide films, polyolefin films, polycarbonate films, polyvinylidene chloride films, polyvinyl alcohol films, saponified ethylene-vinyl acetate copolymers, and others. A film of resin such as can be used, and the film may be any of stretched or unstretched.

Next, as the resin 14 having the barrier property and the heat seal property constituting the lid member, the above-described resin film having the barrier property and the heat seal property can be used similarly, for example, oxygen gas, It has a barrier property against water vapor, printing ink components, adhesive residual solvent, etc., has an anti-adsorption property, has thermoformability such as vacuum and pressure molding, and melts by heat. For example, a polyacrylonitrile-based resin or an ethylene / vinyl alcohol copolymer resin can be used.
Among them, in the present invention, it is possible to use an ethylene / vinyl alcohol copolymer resin as a resin having a barrier property and a heat seal property, such as oxygen gas barrier property, thermoformability such as vacuum / pressure forming, and easy peel property ( It is preferable in that it is excellent in easy-openability.
The ethylene / vinyl alcohol copolymer resin preferably has an ethylene content of 44 mol% to 52 mol% in terms of barrier properties, moldability, and heat sealability.
That is, when the ethylene content is less than 44 mol%, the heat sealability is inferior, which is not preferable. When the ethylene content exceeds 52 mol%, the barrier property is deteriorated, which is not preferable.
The thickness is preferably about 5 μm to 300 μm, and preferably about 20 μm to 150 μm.

Moreover, as a light shielding layer constituting the above-mentioned lid material, an aluminum foil or an aluminum vapor deposition film may be provided as an intermediate layer, and it is formed using a printing ink of purple ink, dark brown ink, or red brown ink. The light shielding layer may be formed on the base film, or a white film, a gray film, or a black film may be used by adding a white pigment or a black pigment to the base film.
By providing the light shielding layer, it is possible to block ultraviolet rays and visible light, so that it is possible to prevent a medicinal component or the like as a content from being denatured by ultraviolet rays during the storage or distribution process.

  In the present invention, as the material constituting the lid, in addition to the materials listed above, for example, properties such as light resistance, heat resistance, chemical resistance, oil resistance, hygiene resistance, and the like are satisfied. Other resin film or sheet, or a reinforcing resin film or sheet that satisfies the strength, firmness, waist, shape retention, etc. as a lid material can be arbitrarily selected and used. Cellophane, synthetic paper, etc. can also be used.

Next, a method of manufacturing a lid by using the above materials and laminating them will be described. As such a method, a method similar to the method of manufacturing the deep drawing packaging material described above is used. Can be manufactured.
Specifically, a lamination method for producing a laminate as a normal packaging material, such as a wet lamination method, a dry lamination method, a solventless dry lamination method, an extrusion lamination method, a T-die coextrusion lamination method, a coextrusion lamination. Or other methods.
In the present invention, for example, an anchor coating agent such as isocyanate (polyurethane), polyethyleneimine, polybutadiene, or organic titanium can be used.
Furthermore, in the present invention, polyurethane, polyester, epoxy, polyamito, poly (meth) acrylic, polyvinyl acetate, cellulose, polyacetal, and other laminating adhesives can be used. .
In the present invention, if necessary, pretreatment such as corona treatment and ozone treatment can be optionally performed.

Next, in the present invention, when sealing the lid material to the flange portion 8 of the deep-drawn molded container, it is preferable to hermetically seal so as to have easy peelability (easy-opening property).
And as a method of sealing and sealing so as to have the above-mentioned easy peel property (easy openability), a resin layer having a barrier property and a heat seal property constituting a seal portion of the flange portion of the deep-drawn molded container, and a lid material By using a polyacrylonitrile-based resin or ethylene / vinyl alcohol copolymer resin for the film layer having the barrier property and heat sealing property constituting the seal part, the method of making the seal layer weakly adhesive, etc. It can be carried out.

Next, the present invention will be described in more detail with reference to examples.
(Manufacture of deep-drawn container 10)
As the resin film 2 having moldability, a moldable unstretched polyamide film having a thickness of 60 μm was prepared.
On the other hand, four types of resins are extruded by a five-layer coextrusion method in which a low-density polyethylene resin, a polyamide resin, and a heat-sealable ethylene / vinyl alcohol copolymer are laminated via an acid-modified polyethylene resin that is an adhesive resin. 10 μm thick low-density polyethylene resin layer / 7 μm thick acid-modified polyethylene resin layer / 18 μm thick polyamide resin layer / 10 μm thick acid-modified polyethylene resin layer / heat-sealable ethylene / vinyl alcohol copolymer resin A five-layer coextruded film consisting of layers was produced.
Next, a two-component curable urethane resin-based anchor agent is applied to the moldable unstretched polyamide film, and the five-layer coextruded film produced above has an anchor agent-coated surface as the surface of the low-density polyethylene resin layer. As opposed to each other, both of them were bonded together by an extrusion lamination method using a low-density polyethylene resin having a thickness of 20 μm to produce a deep drawing packaging material according to the present invention.
Next, the deep drawing packaging material 1 manufactured above is heated and softened to about 100 ° C. to 120 ° C., and then vacuum-compressed to form a molded product size of 150 mm in length, 40 mm in width, 15 mm in depth, and the flange portion 8. A deep-drawn container 10 having a width of 7 mm was manufactured.
The deep-drawn molded container 10 was a molded container having excellent strength, shape retention, barrier properties, and heat sealability necessary for sealing the lid.
The ethylene / vinyl alcohol copolymer resin constituting the deep-drawing packaging material 1 had an ethylene content of 47 mol%.
(Manufacture of lid 20)
Next, a normal gravure ink composition made of polyurethane-based ink was used on a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, and a desired printing pattern was formed by a gravure printing method.
Next, a biaxially stretched polyamide film having a thickness of 15 μm was dry-laminated on the printing surface of the above biaxially stretched polyethylene terephthalate film using a two-component curing type polyurethane adhesive.
Furthermore, a two-component curable polyurethane is prepared by making a film having a barrier property and heat seal property of 30 μm thick made of a heat-sealable ethylene / vinyl alcohol copolymer resin face the biaxially stretched polyamide film. Layer lamination, 12 μm thick biaxially oriented polyethylene terephthalate film / adhesive layer / 15 μm thick biaxially stretched polyamide film / adhesive layer / 30 μm thick heat A sealing material of ethylene / vinyl alcohol copolymer resin was produced.
(Manufacture of package 100)
Next, 150 ml of a sterilized water-filled polyethylene bag for medical use is filled as the contents 9 in the deep-drawn molded container 10 manufactured as described above, and then the cover material manufactured as described above is formed on the surface of the flange portion 8 of the container. 20 are laminated with the surfaces of the film having a barrier property and heat sealability of 30 μm facing each other, and then both are heat sealed (heat seal conditions, heat seal temperature: 145 ° C., heat seal pressure: 200 kPa). , Heat sealing time: 1 second) and hermetically sealed 16 to produce a package 100 filled and packed with the filler 7.
The package 100 of the deep-drawn molded container obtained above has a barrier property without causing the adhesive component or the like to move to the contents 9, and has a heat seal property necessary for sealing the lid member 20. And it was a molded container that can be easily opened by picking with a finger.
The heat seal strength between the deep-drawn container 10 and the lid member 20 was 18 N / 15 mm.
In addition, as a polyethylene bag, the bag which consists of a low density polyethylene film without the additive of thickness 40 micrometers was used.

(Manufacture of deep-drawn container 10)
As the resin film 2 having moldability, a moldable unstretched polypropylene film having a thickness of 50 μm was prepared.
On the other hand, an unstretched polyamide film having a thickness of 60 μm and a polyacrylonitrile film having a thickness of 30 μm are laminated by a dry laminating method through a two-component curing type polyurethane adhesive as an adhesive, and an unstretched film having a thickness of 50 μm is obtained. A laminated film composed of a stretched polypropylene film layer / adhesive layer / unstretched polyamide film layer having a thickness of 60 μm / adhesive layer / polyacrylonitrile film layer having a thickness of 30 μm is manufactured, and the deep drawing packaging material 1 according to the present invention is used. Manufactured.
Next, the deep drawing packaging material 1 manufactured above is heated and softened to about 100 ° C. to 120 ° C., and then vacuum-compressed to form a molded product size of 150 mm in length, 40 mm in width, 15 mm in depth, and the flange portion 8. A deep-drawn container with a width of 7 mm was produced.
The deep-drawn molded container 10 was a molded container having excellent strength, shape retention, barrier properties, and heat sealability necessary for sealing the lid.
(Manufacture of lid 20)
Next, a normal gravure ink composition made of polyurethane-based ink was used on a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, and a desired printing pattern was formed by a gravure printing method.
Next, a biaxially stretched polyamide film having a thickness of 15 μm was dry-laminated on the printing surface of the above biaxially stretched polyethylene terephthalate film using a two-component curing type polyurethane adhesive.
Further, a two-component curing type polyurethane adhesive is used by facing a film having a barrier property and a heat seal property made of a polyacrylonitrile film having a thickness of 30 μm on the surface of the biaxially stretched polyamide film. Dry laminate to produce a layer structure, 12 μm thick biaxially stretched polyethylene terephthalate film / adhesive layer / 15 μm thick biaxially stretched polyamide film / adhesive layer / 30 μm thick polyacrylonitrile film lid did.
(Manufacture of package 100)
Next, 150 ml of a sterilized water-filled polyethylene bag for medical use is filled as the contents 9 in the deep-drawn molded container 10 manufactured as described above, and then the cover material manufactured as described above is formed on the surface of the flange portion 8 of the container. The surfaces of the resin layer having a barrier property and heat sealability of 30 μm in thickness are overlapped, and then both are heat sealed (heat seal conditions, heat seal temperature: 135 ° C., heat seal pressure: 200 kPa). , Heat sealing time: 1 second) and hermetically sealed 16 to produce a package 100 filled and packed with the filler 7.
The deep drawn molded container package 100 obtained above has a barrier property without the adhesive component or the like being transferred to the contents, and has a heat seal property necessary for sealing the lid, And it was the shaping | molding container which can be picked with a finger | toe and can be opened easily.
The heat seal strength between the deep-drawn container and the lid was 14 N / 15 mm.
As the polyethylene bag, as in Example 1, a bag made of a low density polyethylene film having no additive having a thickness of 40 μm was used.

[Comparative Example 1]
(Manufacture of deep-drawn containers)
As in Example 1, a moldable unstretched polyamide film was prepared as a resin film having moldability.
On the other hand, a film made of an ethylene / vinyl alcohol copolymer and a polypropylene film are superposed and dry-laminated using a two-component curable polyurethane adhesive to form a layer structure, an unstretched polyamide film layer having a thickness of 60 μm. / Adhesive layer / 20 μm thick ethylene / vinyl alcohol copolymer film / adhesive layer / 80 μm thick laminate film laminated film Manufactured.
Next, the deep drawing packaging material produced above is heated and softened to about 100 ° C. to 120 ° C., and then vacuum-compressed to form a molded product size of 150 mm in length, 40 mm in width, 15 mm in depth, and 7 mm in width of the flange portion. A deep-drawn container was manufactured.
The ethylene content of the ethylene / vinyl alcohol copolymer resin constituting the deep drawing packaging material was 44 mol%.
(Manufacture of lid materials)
Next, a normal gravure ink composition made of polyurethane-based ink was used on a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, and a desired printing pattern was formed by a gravure printing method.
Next, a biaxially stretched ethylene / vinyl alcohol copolymer film having a thickness of 15 μm was dry-laminated on the printing surface of the above biaxially stretched polyethylene terephthalate film using a two-component curable polyurethane adhesive.
Furthermore, with the surface of the biaxially stretched ethylene / vinyl alcohol copolymer film facing the surface of the film having an easy peel property against polypropylene made of a resin obtained by blending a polyolefin resin and a styrene resin, Dry lamination using a two-component curable polyurethane adhesive, layer structure, 12 μm thick biaxially stretched polyethylene terephthalate film / adhesive layer / 15 μm thick biaxially stretched ethylene / vinyl alcohol A lid material of heat-sealable ethylene / vinyl alcohol copolymer having a polymer film / adhesive layer / thickness of 30 μm was produced.
(Manufacture of packaging)
Next, the deep-drawn molded container manufactured above is filled with 150 ml of a sterilized water-filled polyethylene bag similar to Example 1 as the contents, and then the surface of the flange part of the container is manufactured as described above. The surface of the film layer having an easy peel property having a thickness of 30 μm and the polypropylene film layer are overlapped with each other, and then heat sealing (heat sealing conditions, heat sealing temperature: 155 ° C., heat Sealing pressure: 200 kPa, heat sealing time: 1 second), hermetically sealed to produce a package filled with the contents.
The package of the deep-drawn container obtained above is a molded container that has a barrier property, has a heat seal property necessary for sealing the lid, and can be easily opened by picking with a finger. Although there was an adhesive component and the like transferred to the contents, it was not preferable.
The heat seal strength between the deep-drawn container and the lid was 16 N / 15 mm.
As the polyethylene bag, as in Example 1, a bag made of a low density polyethylene film having no additive having a thickness of 40 μm was used.

[Performance evaluation results]
The sensory test and the measurement of the solvent content were evaluated as follows.
(Sensory test)
The deep-drawn molded container obtained above was filled with the contents, and after 24 hours at a temperature of 60 ° C. in a thermostatic bath, the taste of water of the contents after storage was used in a comparative test by sensory with five selected panelists. .
As the above contents, two low-density polyethylene films (120 mm long, 40 mm wide) with no additive of thickness 40 μm are overlapped and sealed in three directions with a width of 5 mm, leaving an opening. The product was manufactured and filled with 150 ml of distilled water, and then the opening was sealed and sealed.
As a result, the contents of Examples 1 and 2 after storage had a polyethylene odor but no solvent odor and were good.
In contrast, the content of Comparative Example 1 after storage was evaluated by 4 out of 5 panelists as having a slight solvent odor in addition to the polyethylene odor.

(Measurement of solvent content)
The deep-drawn container obtained above was sealed by heat sealing with a lid material, left in a thermostatic bath at 60 ° C. for 24 hours, and then allowed to cool at room temperature for 10 minutes.
Next, the gas in the deep-drawn container sealed with this lid was sampled with a 1 ml gas tight syringe, and the solvent concentration was measured with a gas chromatograph.
As a result, the solvent content of the air in the container of Example 1 was 5 mg of acetic acid ethyl ester per cubic meter.
The solvent content in the container of Example 2 was 3 mg of ethyl acetate per cubic meter.
The solvent content in the container of Comparative Example 1 was 76 mg of acetic acid ethyl ester per cubic meter.
In addition, it is thought that the detected ethyl acetate originates from the adhesive agent used between the layers of the laminated body which comprises a container and a lid | cover material, and has migrated from the inner surface of a container and a lid | cover material.

As a result, the packaging bodies of Example 1 and Example 2 both showed good results in the sensory test and the solvent content.
However, none of the conventional containers and lids (Comparative Example 1) satisfy these performances.
That is, in the packaging bodies of Example 1 and Example 2, the solvent derived from the adhesive did not migrate from the inner surfaces of the container and the lid material, and was excellent in barrier properties, sanitary safety, and quality storage stability.
On the other hand, in the packaging body of Comparative Example 1, the solvent derived from the adhesive migrated from the inner surfaces of the container and the lid material, resulting in a solvent odor, which was not preferable.

  Applications of the deep-drawn container of the present invention include, for example, foods, cosmetics, bags or containers containing chemicals, medical devices, electronic components such as hard disks, or solid materials such as electronic component substrates such as silicon wafers and glass substrates. There is no particular limitation.

It is sectional drawing which shows the layer structure about one Example of the packaging material for deep drawing concerning this invention. It is sectional drawing which shows the layer structure about the other Example of the packaging material for deep drawing concerning this invention. It is sectional drawing which shows the structure of the deep drawing molded container manufactured using the packaging material for deep drawing shown in FIG. It is sectional drawing which shows the structure of the package body which filled and packaged the contents using the deep drawing molded container shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging material for deep drawing 2 Film layer of resin which has moldability 3 Anti-pinhole layer 4 Adhesive layer 6 Resin layer which has barrier property and heat sealability 7 Filling 8 Flange part 9 Contents 10 Deep drawing molding container 12 Material film 14 Barrier and heat-sealable film layer 16 Sealing portion 18 Oxygen scavenger 20 Lid 100 Packaging

Claims (5)

Formed from the outside by vacuum and pressure molding of a deep drawing packaging material in which at least a film of resin having moldability and a resin layer having barrier properties and heat sealability are sequentially laminated via an adhesive layer A deep-drawn container,
A deep-drawn molded container, wherein the resin layer having the barrier property and the heat seal property is made of an ethylene / vinyl alcohol copolymer or polyacrylonitrile.   A package comprising the deep-drawn container of claim 1 filled with contents and further sealed with a lid on the flange of the opening of the deep-drawn container.   The lid material is a laminate formed by sequentially laminating at least a base film and a resin layer having a barrier property and a heat seal property through an adhesive layer from the outside. 2. The package described in 2.   The said content is accommodated in the said container with the oxygen absorber package which packaged the oxygen absorber with the packaging material which consists of a breathable sheet at least in part. The package described in any one. The package according to any one of claims 2 to 4, wherein the content stored in the container is a medical instrument, a bag or container containing a medicine, an electronic component, or an electronic component member.

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